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1. windows消息WM_ 2. WM_NULL = $0000; 3. WM_CREATE = $0001; 4. 应用程序创建一个窗口 5. WM_DESTROY = $0002; 6. 一个窗口被销毁 7. WM_MOVE = $0003; 8. 移动一个窗口 9. WM_SIZE = $